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Double-frequency external cavity laser with a singular optical semiconductor amplifier

Kowalczyk E., Szyjer M., Fronc K., Mroziewicz B.

Opto-Electronics Review

2009

Vol. 17, No. 3

255-259

Optical properties of an external cavity laser with a semiconductor optical amplifier and two diffraction gratings are described. The laser has been pigtailed and its emission showed two peaks in the output spectrum. The wavelength of the peaks, and in particular the spectral spacing between them, could be controlled by adjusting the reflecting elements in the system. The proposed double-frequency laser may be adopted as a signal source in terahertz generators.